A219865 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A219865

First differences of A219795.

0, 0, 0, 1, 0, 2, 2, 3, 1, 5, 7, 10, 11, 14, 23, 33, 44, 54, 81, 114, 158, 212, 287, 407, 565, 777, 1050, 1471, 2036, 2813, 3863, 5310, 7370, 10183, 14046, 19296, 26726, 36909, 50955, 70251, 96867, 133886, 184841, 255092, 351673

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,6

COMMENTS

2,2,3, 5,7,10,11, 23,33,44, 81,114,158,212, 407,565,777, 1471,2036,2813,3863, 7370,10183,14046, 26726,36909,50955,70251, is a subsequence of A219795(n).

Consider A219795(n) and its successive differences:

2, 2, 2, 2, 3, 3, 5, 7, 10, 11, 16, 23, 33, 44; A219795(n)

0, 0, 0, 1, 0, 2, 2, 3, 1, 5, 7, 10, 11, 14; a(n)

0, 0, 1, -1, 2, 0, 1, -2, 4, 2, 3, 1, 3, 9;

0, 1, -2, 3, -2, 1, -3, 6, -2, 1, -2, 2, 6, 1;

LINKS

Table of n, a(n) for n=0..44.

FORMULA

a(n) = A219795(n+1) - A219795(n).

MAPLE

A219865 := proc(n)

A219795(n+1)-A219795(n) ;

end proc: # R. J. Mathar, Jan 06 2013

CROSSREFS

Sequence in context: A155980 A309531 A215222 * A016539 A345886 A373880

Adjacent sequences: A219862 A219863 A219864 * A219866 A219867 A219868

KEYWORD

nonn,less

AUTHOR

Paul Curtz, Nov 30 2012

STATUS

approved